Wika CPH65I0 Manual do Utilizador descarregar pdf (Página 41)

41WIKA operating instructions, model CPH65I0

14061681.02 03/2013 GB/D

6. Commissioning, operation

6.11.3 %-Error function

WARNING!

Observe the connection parameters prior to making a connection to the

instrument.

The calibrator features a special function which can calculate the error in the pressure

value from the mA value as a percentage of the 4 ... 20 mA span. The %-Error mode

uses all three screens and has a special menu structure. It displays pressure, mA and

%-error simultaneously.

Example:

Suppose a pressure transmitter under test has a full scale range of 0 ... 20 bar and gives

a corresponding 4 ... 20 mA output signal. The user can programme in a 0 ... 20 bar

Figure 6: CPH65I0 with a pressure transmitter with %-Error function

CPH65I0

F1 F2 F3

OFF

ZERO

P1 P2

30V

24mA

max

–

SIGNAL

TEST

[P1]

0.00

psi

mA 0.00%

CONFIG

4.000 mA

LOWER

% ERROR

0.00 %

1 2 ... 36 37 38 39 40 41 42 43 44 45 46 ... 99 100

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Wika CPH65I0 Manual do Utilizador Página 41